In retrospect, the foresight was there

“Five months before Sept. 11, 2001, the officers responsible for defending American airspace wanted to test their ability to prevent a hijacked airliner from being crashed into the Pentagon, but the scenario was rejected by the Joint Chiefs of Staff as impractical, a Joint Chiefs spokesman confirmed yesterday.”

(via BoGlo: “Pentagon crash ‘too unrealistic'” by Bryan Bender [April 14, 2004])